Power transmission transformer with a noise inhibiting function

Abstract

A power transmission transformer ( 1 ) includes a transformer body ( 11 ). Each of two upper pipings ( 3 ) is connected between the transformer body ( 11 ) and one of two heat dissipators ( 2, 21 ) outside of the transformer body ( 11 ). Each of two lower pipings ( 4 ) is connected between the transformer body ( 11 ) and one of the heat dissipators ( 2, 21 ). A sound absorbing device ( 6, 61 ) is mounted between and spaced from one of two sidewalls of the transformer body ( 11 ) and one of the heat dissipators ( 2, 21 ). The sound absorbing device ( 6, 61 ) is fixed to one of the upper pipings ( 3 ) and one of the lower pipings ( 4 ). An outer wallboard ( 63 ) and a sound absorbing material ( 64 ) are respectively mounted to two sides of at least one fixing frame ( 62 ) of the sound absorbing device ( 6, 61 ).

The invention claimed is: 
     
       1. A power transmission transformer with a noise inhibiting function comprising:
 a transformer body including a housing, with the housing being a parallelepiped and including two sidewalls opposite to each other, with the housing further including two end walls opposite to each other; 
 two heat dissipators mounted outside of the transformer body, with the two heat dissipators respectively facing and spaced from the two sidewalls; 
 two upper pipings, with each of the two upper pipings connected between the transformer body and an upper section of one of the two heat dissipators, with a transformer oil received in the transformer body adapted to flow into the two heat dissipators via the two upper pipings; 
 two lower pipings, with each of the two lower pipings connected between the transformer body and a lower section of one of the two heat dissipators, with the transformer oil in each of the two heat dissipators adapted to flow through the two lower pipings into the transformer body; and 
 a first sound absorbing device mounted between and spaced from one of the two sidewalls of the housing and one of the two heat dissipators, with the first sound absorbing device fixed to one of the two upper pipings and one of the two lower pipings, with the first sound absorbing device including at least one fixing frame having a first side facing the one of the two heat dissipators and a second side facing the transformer body, with the first sound absorbing device further including an outer wallboard mounted to the first side of the at least one fixing frame of the first sound absorbing device, and with the first sound absorbing device further including a sound absorbing material mounted to the second side of the at least one fixing frame of the first sound absorbing device and configured to inhibit and reduce resonant noise from the housing of the transformer body. 
 
     
     
       2. The power transmission transformer with a noise inhibiting function as claimed in  claim 1 , with the first sound absorbing device further including an outer shielding board, with the at least one fixing frame and the outer shielding board defining a space receiving the sound absorbing material, and with the outer shielding board including a plurality of vents. 
     
     
       3. The power transmission transformer with a noise inhibiting function as claimed in  claim 2 , wherein the sound absorbing material of the first sound absorbing device is wrapped by a waterproof film. 
     
     
       4. The power transmission transformer with a noise inhibiting function as claimed in  claim 1 , further comprising a second sound absorbing device mounted between mounted between and spaced from another of the two sidewalls of the housing and another of the two heat dissipators, with the second sound absorbing device fixed to another of the two upper pipings and another of the two lower pipings, with the second sound absorbing device including at least one fixing frame having a first side facing the other of the two heat dissipators and a second side facing the transformer body, with the second sound absorbing device further including an outer wallboard mounted to the first side of the at least one fixing frame of the second sound absorbing device, and with the second sound absorbing device further including a sound absorbing material mounted to the second side of the at least one fixing frame of the second sound absorbing device configured to inhibit and reduce resonant noise from the housing of the transformer body. 
     
     
       5. The power transmission transformer with a noise inhibiting function as claimed in  claim 4 , with each of the two upper pipings including an upper connection pipe extending horizontally, with the upper connection pipe of each of the two upper pipings including a first upper fitting connected to an upper section of the housing of the transformer body and a plurality of second upper fittings connected to the upper section of one of the two heat dissipators,
 with each of the two lower pipings including a lower connection pipe extending horizontally, with the lower connection pipe of each of the two lower pipings including a first lower fitting connected to a lower section of the housing of the transformer body and a plurality of second lower fittings connected to the lower section of one of the two heat dissipators, and 
 with the at least one fixing frame of the first sound absorbing device fixed between the upper connection pipe of one of the two upper pipings and the lower connection pipes of one of the two lower pipings, and with the at least one fixing frame of the second sound absorbing device fixed between the upper connection pipe of the other of the two upper pipings and the lower connection pipe of the other of the two lower pipings. 
 
     
     
       6. The power transmission transformer with a noise inhibiting function as claimed in  claim 5 , with each lower connection pipe including a plurality of brackets connected to one of the two sidewalls of the housing of the transformer body, with a plurality of posts fixed between one of the upper connection pipes and one of the lower connection pipes, with the plurality of posts spaced from each other, with the at least one fixing frame of each of the first and second sound absorbing devices including a plurality of fixing frames, and with each of the plurality of fixing frames fixed between two adjacent posts. 
     
     
       7. The power transmission transformer with a noise inhibiting function as claimed in  claim 6 , with each of the upper connection pipes, the lower connection pipes, and the plurality of posts including a plurality of fixing plates, with each of the plurality of fixing plates having a fixing hole, with each outer wallboard including a plurality of fixing holes aligned with the fixing holes of the plurality of fixing plates of the upper connection pipes, the lower connection pipes, and the plurality of posts, and with a plurality of bolts extending through the plurality of fixing holes of each outer wall board and the fixing holes of the plurality of fixing plates of the upper connection pipes, the lower connection pipes, and the plurality of posts. 
     
     
       8. The power transmission transformer with a noise inhibiting function as claimed in  claim 6 , with a resilient frame pad mounted around each of the plurality of fixing frames, and with each resilient frame pad having an outer side contacting with one of the upper connection pipes, one of the lower connection pipes, two adjacent posts, and the plurality of fixing plates of the one of the upper connection pipes, the one of the lower connection pipes, and the two adjacent posts. 
     
     
       9. The power transmission transformer with a noise inhibiting function as claimed in  claim 6 , with each of the first and second sound absorbing devices further including a plurality of outer shielding boards, with each of the plurality of fixing frames and one of the plurality of outer shielding boards defining a space receiving one of the sound absorbing materials, and with each of the plurality of outer shielding boards including a plurality of vents. 
     
     
       10. The power transmission transformer with a noise inhibiting function as claimed in  claim 9 , wherein the sound absorbing material of each of the first and second sound absorbing devices wrapped by a waterproof film.